Ignition system



Au 29, 1933. L. B. SAUER 1,924,292

I GNI'I'ION SYSTEM Filed Kay 31, 1930 IFQA I I I I I I Q [201.115 E. 5am?!" Mb E1 fly filiuTnTy A Patented Aug. 29, 1933 UNITED STATES 1,924,292 IGNITION SYSTEM Louis B. Sauer, Western Springs, 111., assignor to Kellogg Switchboard and Supply Company, Chicago, 111., a corporation of Illinois Application May 31, 1930. Serial No. 458,820

3 Claims.

condenser across the said circuit breaker.

A further feature of my invention is the use of a single standard capacity condenser, such as a -28 condenser, across the circuit breaker, providing a more effective spark in the cylinders 15 than is obtained by the use of more than one standard capacity condenser or a condenser of greater capacity.

The above features as well as others will be more specifically hereinafter described in the ensuing specification and the accompanying drawing in which:

Fig. 1 is a diagrammatical representation of the circuit;

Fig. 2 is an optional arrangement of the resistance across the circuit breaker; and

Fig. 3 is a representation of the circuit connections between the coils, distributors and spark plugs of the engine.

In multi-cylindered internal combustion engines using low grade fuel it has been found that better results are obtained by providing a plurality of spark plugs for each cylinder of the engine. In such systems separate distributing means are necessary for each set of spark plugs. In the present embodiment of my invention I show four distributor leads D", D-, D and D which may be connected to four separate distributors, D, D, D and D of Fig. 3, such as shown in U. S. Patent No. 1,724,682 issued to me on August 13, 1929, or to a pair of double distributors such as are well known in the art.

Referring now to the drawing in which like reference characters indicate the same parts in all the figures, B represents a storage battery which 45 furnishes current for the ignition system. GB,

is the circuit breaker of standard type, the operation of which is well understood. PC is a standard capacity condenser such as the 20-28 condenser commonly used, bridged across the 0 contact points P of the circuit breaker CB. At R is shown a resistance of twelve to eighteen feet of wire bridged across the circuit breaker CB and the condenser C at the primary winding of the induction coil P. This resistance should usually be of twelve to fourteen gauge wire and having a minimum resistance of .018 ohms and a maximum resistance of .043 ohms. However other amounts of resistance may be used depending on the individual requirements of the differentsystemsandIdonotwishtobeconflnedto the limits herein mentioned. In Fig. 2 a carbon resistance R is substituted for the wire resistance R. The induction coils CO, CO, CO and CO supply high frequency sparks through the leads D", D D and D to the distributors D, D, D and D as is well understood in the art. The distributors D, D, D and D shown in Fig. 3 are each provided with four leads only two of which are shown connected to spark plugs S and S located in cylinders A and B of the internal combustion engine. Each of the distributors D, D D and D has one terminal which is connected to a spark plug S in cylinder A and one which is connected to a spark plug S in cylinder B; the other terminals are connected to spark plugs in other cylinders which are not shown. A

distributor and a coil are provided for each set of spark plugs but only one circuit breaker P is provided for the four sets of coils and plugs. L is a lamp connected in series in the circuit to absorb the excess current when the motor is idling. C, C, C, C and C are condensers placed between the resistance R and the primary windings P, P, P and P of the induction coils CO, CO, CO and CO. u

While I have illustrated and described a specitlc form of my invention, it is to be understood that I do not wish to be limited to the exact arrangement shown, but aim to cover all such changes and modifications as come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by United States Letters Patent is:

1. In an ignition system, a cylinder, a plurality of spark plugs in said cylinder, a spark coil for each of said plugs, a circuit breaker, a condenser bridged across the points of said circuit breaker, a length of wire having a resistance ranging from .018 ohms to .043 ohms also bridged across the points of said circuit breaker, and condensers in said wire,

2. In an ignition system, a cylinder, a plurality of spark plugs in said cylinder, a spark coil for each of said plugs, a circuit breaker, a condenser bridged across the points of said circuit breaker, a resistance varying between .018 ohms and .043 ohms also bridged across the points of said circuit breaker, and condensers in serieswith said resistance.

3. In an ignition system, a plurality of cylinders, a plurality of spark plugs for each of said cylinders, a spark coilfor each of said plugs, a circuit breaker, a condenser bridged across the points of said circuit breaker, a resistance also bridged across the points of said circuit breaker, and condensers in series with said resistance.

LOUIS B. BAUER. 

